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Finding the Fourth Proportional to 547,654.35, 755,759.37 and 305,934.78

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Solution

The fourth proportional to 547,654.35, 755,759.37 and 305,934.78 is: 422,187.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,654.35 : 755,759.37 = 305,934.78 : x
  2. Step 2: Convert to fraction form
    547,654.35/755,759.37 = 305,934.78/x
  3. Step 3: Cross multiply
    547,654.35x = 755,759.37 × 305,934.78
  4. Step 4: Simplify right side
    547,654.35x = 231,213,076,593.89
  5. Step 5: Solve for x
    x = 231,213,076,593.89/547,654.35
  6. Step 6: Final answer
    x = 422,187.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.